<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card class="card">
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入搜索内容"
                    class="input-with-select"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getUserList()">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getUserList()">
            </el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!-- 添加用户按钮 -->
          <el-button type="primary"
                     @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist"
                stripe
                border>
        <el-table-column type="index"
                         label="#">
        </el-table-column>
        <el-table-column prop="username"
                         label="姓名">
        </el-table-column>
        <el-table-column prop="email"
                         label="邮箱">
        </el-table-column>
        <el-table-column prop="mobile"
                         label="电话">
        </el-table-column>
        <el-table-column prop="role_name"
                         label="角色">
        </el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state"
                       @change="useStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       @click="showEditDialog(scope.row.id)">
            </el-button>
            <!-- 删除按钮 -->
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini"
                       @click="removeUserById(scope.row.id)">
            </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark"
                        content="分配角色"
                        placement="top"
                        :enterable='false'>
              <el-button type="warning"
                         icon="el-icon-setting"
                         size="mini"
                         @click="setRoles(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[1, 2, 5, 10]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户信息"
               :visible.sync="addDialogVisible"
               width="50%"
               @close='addDialogClose'>
      <!-- 内容主体区域 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户信息"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="editDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"
                    disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>

    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色"
               :visible.sync="setRolesdialogVisible"
               width="50%"
               @close="setRolesdialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectRolesId"
                     placeholder="请选择">
            <!-- :label看到的文本
                     :value是选中的值 -->
            <el-option v-for="item in rolesList"
                       :key="item.id"
                       :label="item.roleName"
                       :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRolesdialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
import {users, userState, addUser, userInfo, editUser, delUser, setUserRoles} from '@/api/user'
import {userRoles} from '@/api/rights'

export default {
  data () {
    // 自定义验证电话规则
    var checkMobile = (rule, value, cb) => {
      // 验证电话的正则表达式
      const regMobile = /^1(3|4|5|7|8)\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('电话号码格式不正确'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 10
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { validator: checkMobile, message: '请输入正确的电话', trigger: ['blur', 'change'] }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 修改用户的表单数据
      editForm: {},
      // 修改用户的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { validator: checkMobile, message: '请输入正确的电话', trigger: ['blur', 'change'] }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRolesdialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: '',
      // 角色列表
      rolesList: '',
      // 已选中的角色Id值
      selectRolesId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 获取用户数据列表
    async getUserList () {
      const res = await users(this.queryInfo)
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize（每页显示多少条数据）改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听pagenum（页码值）改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async useStateChanged (userinfo) {
      const res = await userState(userinfo)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const res = await addUser(this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      const res = await userInfo(id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const res = await editUser(this.editForm)
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        this.$message.success('更新用户信息成功！')
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getUserList()
      })
    },
    // 删除用户
    removeUserById (id) {
      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
        // 确认后的操作
      }).then(async () => {
        const res = await delUser(id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败！')
        }
        this.$message.success('删除用户成功！')
        this.getUserList()
        // 失败后的操作
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
    },
    // 分配角色的对话框
    async setRoles (userInfo) {
      this.userInfo = userInfo
      const res  = await userRoles()
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色失败！')
      }
      this.rolesList = res.data
      this.setRolesdialogVisible = true
    },
    // 确定分配新角色
    async saveRoleInfo () {
      if (!this.selectRolesId) {
        return this.$message.error('请选择要分配的角色')
      }
      const res = await setUserRoles({id: this.userInfo.id, selectRolesId : this.selectRolesId})
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRolesdialogVisible = false
    },
    // 监听分配角色对话框关闭事件
    setRolesdialogClosed () {
      this.selectRolesId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="scss" scoped>
.el-table {
  margin-top: 15px;
  font-size: 12px;
}
.el-pagination {
  margin-top: 15px;
}
.el-breadcrumb{
  margin-bottom: 15px;
}
</style>
